/// <summary>
/// Initializes a new instance of the <see cref="PrioritizedTrigger"/> structure.
/// </summary>
/// <param name="trigger">The trigger being applied.</param>
/// <param name="selector">The selector which caused the trigger to be applied.</param>
/// <param name="priority">The trigger's priority.</param>
/// <param name="index">The index of the trigger's rule set within its style sheet.</param>
public PrioritizedTrigger(UvssTrigger trigger, UvssSelector selector, Int32 priority, Int32 index)
{
this.Trigger = trigger;
this.Selector = selector;
this.Priority = priority;
this.Index = index;
}
/// <summary>
/// Initializes a new instance of the <see cref="PrioritizedStyle"/> structure.
/// </summary>
/// <param name="style">The style being applied.</param>
/// <param name="selector">The selector which caused the style to be applied.</param>
/// <param name="priority">The style's priority.</param>
/// <param name="index">The index of the style's rule set within its style sheet.</param>
public PrioritizedStyle(UvssRule style, UvssSelector selector, Int32 priority, Int32 index)
{
this.Style = style;
this.Selector = selector;
this.Priority = priority;
this.Index = index;
}
/// <summary>
/// Applies a style to the element.
/// </summary>
/// <param name="style">The style which is being applied.</param>
/// <param name="selector">The selector which caused the style to be applied.</param>
/// <param name="navigationExpression">The navigation expression associated with the style.</param>
/// <param name="dprop">A <see cref="DependencyProperty"/> that identifies the dependency property which is being styled.</param>
protected internal virtual void ApplyStyle(UvssRule style, UvssSelector selector, NavigationExpression?navigationExpression, DependencyProperty dprop)
{
if (dprop != null)
{
dprop.ApplyStyle(this, style);
}
}
/// <summary>
/// Adds a trigger to the prioritizer.
/// </summary>
/// <param name="uv">The Ultraviolet context.</param>
/// <param name="selector">The selector which caused this style to be considered.</param>
/// <param name="navigationExpression">The navigation expression associated with the style.</param>
/// <param name="trigger">The trigger to add to the prioritizer.</param>
public void Add(UltravioletContext uv, UvssSelector selector, NavigationExpression? navigationExpression, Trigger trigger)
{
Contract.Require(uv, "uv");
var key = new StyleKey(trigger.CanonicalName, navigationExpression);
var priority = CalculatePriorityFromSelector(selector, false);
PrioritizedTrigger existing;
if (!triggers.TryGetValue(key, out existing) || selector.IsHigherPriorityThan(existing.Selector))
{
triggers[key] = new PrioritizedTrigger(trigger, selector, priority);
}
}
/// <summary>
/// Gets a value indicating whether the rule set matches the specified UI element.
/// </summary>
/// <param name="element">The UI element to evaluate.</param>
/// <param name="selector">The selector that matches the element, if any.</param>
/// <returns><see langword="true"/> if the rule set matches the specified UI element; otherwise, <see langword="false"/>.</returns>
public Boolean MatchesElement(UIElement element, out UvssSelector selector)
{
selector = null;
foreach (var potentialMatch in selectors)
{
if (potentialMatch.MatchesElement(element))
{
if (selector == null || potentialMatch.ComparePriority(selector) >= 0)
{
selector = potentialMatch;
}
}
}
return selector != null;
}
/// <summary>
/// Adds a style to the prioritizer.
/// </summary>
/// <param name="uv">The Ultraviolet context.</param>
/// <param name="selector">The selector which caused this style to be considered.</param>
/// <param name="navigationExpression">The navigation expression associated with the style.</param>
/// <param name="style">The style to add to the prioritizer.</param>
public void Add(UltravioletContext uv, UvssSelector selector, NavigationExpression? navigationExpression, UvssStyle style)
{
Contract.Require(uv, "uv");
var key = new StyleKey(style.CanonicalName, navigationExpression);
var priority = CalculatePriorityFromSelector(selector, style.IsImportant);
PrioritizedStyle existing;
if (!styles.TryGetValue(key, out existing))
{
styles[key] = new PrioritizedStyle(style, selector, priority);
}
else
{
if (selector.IsHigherPriorityThan(existing.Selector) && (style.IsImportant || !existing.Style.IsImportant))
{
styles[key] = new PrioritizedStyle(style, selector, priority);
}
}
}
/// <summary>
/// Adds a trigger to the prioritizer.
/// </summary>
/// <param name="uv">The Ultraviolet context.</param>
/// <param name="selector">The selector which caused this style to be considered.</param>
/// <param name="navigationExpression">The navigation expression associated with the style.</param>
/// <param name="trigger">The trigger to add to the prioritizer.</param>
/// <param name="index">The index of the trigger's rule set within the style sheet.</param>
public void Add(UltravioletContext uv, UvssSelector selector, NavigationExpression? navigationExpression, UvssTrigger trigger, Int32 index)
{
Contract.Require(uv, nameof(uv));
var key = new StyleKey(trigger.CanonicalName, navigationExpression);
var priority = CalculatePriorityFromSelector(selector, false);
PrioritizedTrigger existing;
if (!triggers.TryGetValue(key, out existing))
{
triggers[key] = new PrioritizedTrigger(trigger, selector, priority, index);
}
else
{
var comparison = selector.ComparePriority(existing.Selector);
if (comparison == 0 && index > existing.Index)
comparison = 1;
if (comparison > 0 && (trigger.IsImportant || !existing.Trigger.IsImportant))
{
triggers[key] = new PrioritizedTrigger(trigger, selector, priority, index);
}
}
}
/// <summary>
/// Initializes a new instance of the <see cref="PrioritizedStyle"/> structure.
/// </summary>
/// <param name="style">The style being applied.</param>
/// <param name="selector">The selector which caused the style to be applied.</param>
/// <param name="priority">The style's priority.</param>
public PrioritizedStyle(UvssStyle style, UvssSelector selector, Int32 priority)
{
this.Style = style;
this.Selector = selector;
this.Priority = priority;
}
/// <summary>
/// Initializes a new instance of the <see cref="UvssStoryboardTarget"/> class.
/// </summary>
/// <param name="selector">The target's selector.</param>
/// <param name="filter">The storyboard target's type filter.</param>
/// <param name="animations">The target's collection of animations.</param>
internal UvssStoryboardTarget(UvssSelector selector, UvssStoryboardTargetFilter filter, UvssStoryboardAnimationCollection animations)
{
this.selector = selector;
this.filter = filter;
this.animations = animations;
}
/// <summary>
/// Initializes a new instance of the <see cref="StoryboardTarget"/> class.
/// </summary>
/// <param name="selector">The selector which specifies which elements this target applies to.</param>
public StoryboardTarget(UvssSelector selector)
{
this.selector = selector;
this.animations = new StoryboardTargetAnimationCollection(this);
}
/// <inheritdoc/>
protected internal sealed override void ApplyStyle(UvssStyle style, UvssSelector selector, NavigationExpression? navigationExpression, DependencyProperty dp)
{
base.ApplyStyle(style, selector, navigationExpression, dp);
}
/// <summary>
/// Initializes a new instance of the <see cref="PrioritizedTrigger"/> structure.
/// </summary>
/// <param name="trigger">The trigger being applied.</param>
/// <param name="selector">The selector which caused the trigger to be applied.</param>
/// <param name="priority">The trigger's priority.</param>
public PrioritizedTrigger(Trigger trigger, UvssSelector selector, Int32 priority)
{
this.Trigger = trigger;
this.Selector = selector;
this.Priority = priority;
}
/// <summary>
/// Initializes a new instance of the <see cref="StoryboardTarget"/> class.
/// </summary>
/// <param name="selector">The selector which specifies which elements this target applies to.</param>
public StoryboardTarget(UvssSelector selector)
{
this.selector = selector;
this.animations = new StoryboardTargetAnimationCollection(this);
}
/// <summary>
/// Initializes a new instance of the <see cref="PlayStoryboardTriggerAction"/> class.
/// </summary>
/// <param name="storyboardName">The name of the storyboard to play.</param>
/// <param name="selector">A selector specifying which elements will be targeted by the storyboard.</param>
internal PlayStoryboardTriggerAction(String storyboardName, UvssSelector selector)
{
this.storyboardName = storyboardName;
this.selector = selector;
}
/// <summary>
/// Adds the specified rule set to the style prioritizer.
/// </summary>
private void AddRuleSetToPrioritizer(UIElement element, UvssSelector selector, UvssRuleSet ruleSet, Int32 index)
{
if (!selector.MatchesElement(element))
return;
var navexp = NavigationExpression.FromUvssNavigationExpression(Ultraviolet, selector.NavigationExpression);
foreach (var rule in ruleSet.Rules)
prioritizer.Add(Ultraviolet, selector, navexp, rule, index);
foreach (var trigger in ruleSet.Triggers)
prioritizer.Add(Ultraviolet, selector, navexp, trigger, index);
}
/// <inheritdoc/>
protected internal sealed override void ApplyStyle(UvssRule style, UvssSelector selector, NavigationExpression?navigationExpression, DependencyProperty dp)
{
base.ApplyStyle(style, selector, navigationExpression, dp);
}
/// <summary>
/// Calculates the specified selector's relative priority.
/// </summary>
/// <param name="selector">The selector to evaluate.</param>
/// <param name="important">A value indicating whether the style should be considered important.</param>
/// <returns>The relative priority of the specified selector.</returns>
private Int32 CalculatePriorityFromSelector(UvssSelector selector, Boolean important)
{
const Int32 ImportantStylePriority = 1000000000;
return selector.Priority + (important ? ImportantStylePriority : 0);
}
/// <summary>
/// Initializes a new instance of the <see cref="UvssStoryboardTarget"/> class.
/// </summary>
/// <param name="selector">The target's selector.</param>
/// <param name="filter">The storyboard target's type filter.</param>
/// <param name="animations">The target's collection of animations.</param>
internal UvssStoryboardTarget(UvssSelector selector, UvssStoryboardTargetFilter filter, UvssStoryboardAnimationCollection animations)
{
this.selector = selector;
this.filter = filter;
this.animations = animations;
}
